PHP如何取消设置多维数组的成员？ [英] PHP How to Unset Member of Multidimensional Array?

问题描述

我有一个三维阵列，看起来像这样

 阵列（
[第1组] =＆GT;排列
    （
        [0] =＆GT;排列
            （
                【类别】= GT;组别1
                [名字] =＆GT;约翰
                [姓氏] =＆GT;约翰斯
                [图片] =＆GT; /mysite.etc/jj.jpg
            ）
        [1] =＆GT;排列
            （
                【类别】= GT;组别1
                [名字] =＆GT;约翰
                [姓氏] =＆GT;詹姆斯
                [图片] =＆GT; /mysite.etc/jj2.jpg
            ）
    ）
[第2组] =＆GT;排列
    （
        [0] =＆GT;排列
            （
                【类别】= GT;第2组
                [名字] =＆GT;约翰
                [姓氏] =＆GT;杰克逊
                [图片] =＆GT;空值
            ）
        [1] =＆GT;排列
            （
                【类别】= GT;第2组
                [名字] =＆GT;约翰
                [姓氏] =＆GT;智新
                [图片] =＆GT; /mysite.etc/jj4.jpg
            ）
    ）...等等）
 

我通过数组试图循环并删除任何人（即数组的第二级）没有在<$ C $价值谁C> [图] 单元。

我试过

 的foreach（$ MYARRAY为$关键=＆GT;＆安培; $组）{
    的foreach（$组为＆放大器; $人员）{
        如果（！file_exists（$员工['形象']））{
            未设置（$人员）;
        }
    }
}
 

但是，这并不删除无图像的数组项。该回路正确识别无图像员工，如果我有一点code给他们呼应到页面上，这个工程。它只是不从 $ MYARRAY 数组unset它们。

谁能帮我实现这一目标？

解决方案

 的foreach（$ MYARRAY为$关键=＆GT; $组）{
     的foreach（$组为$ K =＆GT; $人员）{
         如果（！file_exists（$员工['形象']））{
             未设置（$ MYARRAY [$关键] [$ K]）;
          }
     }
}
 

//你应该知道的$组和$工作人员临时变量

I have a three dimensional array that looks like this

Array(
[Group 1] => Array
    (
        [0] => Array
            (
                [category] => Group1
                [firstname] => John
                [lastname] => Johns
                [image] => /mysite.etc/jj.jpg
            )
        [1] => Array
            (
                [category] => Group1
                [firstname] => John
                [lastname] => James
                [image] => /mysite.etc/jj2.jpg
            )
    )
[Group 2] => Array
    (
        [0] => Array
            (
                [category] => Group2
                [firstname] => John
                [lastname] => Jackson
                [image] => NULL
            )
        [1] => Array
            (
                [category] => Group2
                [firstname] => John
                [lastname] => Jimson
                [image] => /mysite.etc/jj4.jpg   
            )
    )...etc)

I'm trying to loop through the array and remove any people (i.e. the second level of the array) who do not have a value in the [image] cell.

I've tried

foreach($MyArray as $Key=>&$group){ 
    foreach($group as &$staff){ 
        if(!file_exists($staff['image'])){
            unset($staff);
        }
    } 
}

but this does not remove the array items with no image. The loop is correctly identifying the staff with no image as if I include a bit of code to echo them onto the page, this works. It's just not unsetting them from the $MyArray array.

Can anyone help me achieve this?

解决方案

foreach($MyArray as $Key=>$group){
     foreach($group as $k=>$staff){ 
         if( !file_exists($staff['image'])) {
             unset($MyArray[$Key][$k]);
          }
     }
}

//you should know the the $group and $staff is temp variables

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